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 like a kid in a sweet shop

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nhp651
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PostSubject: Re: like a kid in a sweet shop   Sun Aug 19, 2018 1:14 am

have begun to fabricate the stern rail sections now ……… start of the stern rails for the boat which will eventually mate up to the cast brass stern rail fitting using 3.2mm "brass" brazing rod, annealed on the gass burner of the stove to ease bending to shape.






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nhp651
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PostSubject: Re: like a kid in a sweet shop   Sun Aug 19, 2018 9:33 pm

now on to the stern rails, these are going to be a little tricky and not straight forward at all...…….each small section will have to be soldered together in small pieces...…..one rail at a time and one stanchion at a time, to build up the whole fabrication...…...and there are four to be fabricated...……...think I'm going to need some more gas, lol...…..or a smaller boat,he he! 










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nhp651
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PostSubject: Re: like a kid in a sweet shop   Mon Aug 20, 2018 4:23 pm

i'ts slow going, but have eventually got through all the silver soldering with the finish of the stern pulpit rails...……..just got to mate them up and solder to the brass fitting on my boat and make something similar for the other boat...…...but will probably fabricate that in plasticard……..much easier..…….my metalworking skills aren't good enough for that,
but I do know there's a few burnt fingers, and a lot of brass there!

now, just a lot of cleaning up to do, No Rolling Eyes 















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PostSubject: Re: like a kid in a sweet shop   Mon Aug 20, 2018 5:58 pm

Very impressive Neil 2thumbsup 2thumbsup 2thumbsup

Barrie
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PostSubject: Re: like a kid in a sweet shop   Mon Aug 20, 2018 6:14 pm

cheers barrie…….

been a slog I can tell you...……….and just about run out of propane...……...mind you, the bottle has lasted 5 or more years so far.
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PostSubject: Re: like a kid in a sweet shop   Mon Aug 20, 2018 7:21 pm

rear rail  has now been temporarily fitted to the stern deck to mark up where to cut in order to silver solder to the brass stern casting supplied.










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PostSubject: Re: like a kid in a sweet shop   Tue Aug 21, 2018 12:21 pm

That is some soldering there Neil, looking good though. It all looks like it's coming together very nicely. Keep up the brilliant work, and I expect you are cussing me, just like gribeauval was, because of the burnt fingers lol. 
Mick F
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nhp651
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PostSubject: Re: like a kid in a sweet shop   Thu Aug 30, 2018 10:08 pm

all of the deck hand rails have now been soldered up and put in place, except for the aft rails and main casting which was a little fiddly, but that has now been rectified, cut to size and ready for soldering together.

this will be done tomorrow. 













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Damien
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PostSubject: Re: like a kid in a sweet shop   Fri Aug 31, 2018 1:14 am

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PostSubject: Re: like a kid in a sweet shop   Fri Aug 31, 2018 4:14 am

Nice work Neil:Thumbup:
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nhp651
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PostSubject: Re: like a kid in a sweet shop   Fri Aug 31, 2018 12:26 pm

thanks guys......just off to the brazing hearth now...……..this is where the swearing and cursing starts. lol
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PostSubject: Re: like a kid in a sweet shop   Fri Aug 31, 2018 7:25 pm

stern rails finally silver soldered to the centre brass cast fitting.....took some doing as the fitting acted as a conduit to loose heat rapidly, but got there in the end.

just a good clean up and a little filing of excess solder and flux and they'll be ready for a hot bath to get rid of grease, and then their "feet" round discs on the bottom of the stanchions.


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PostSubject: Re: like a kid in a sweet shop   Mon Sep 03, 2018 12:48 am

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nhp651
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PostSubject: Re: like a kid in a sweet shop   Mon Sep 03, 2018 1:00 am

how ya feeling matey..……….hope you getting over that virus you've had.
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PostSubject: Re: like a kid in a sweet shop   Mon Sep 03, 2018 1:06 am

Still hanging round M8
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PostSubject: Re: like a kid in a sweet shop   Thu Sep 06, 2018 5:08 pm

I got stuck in to the collapsible mast today.

it is wholly made from 3D printed parts and goes together easily.

unfortunately unless you a genius and lateral thinker outside the box in order to fabricate and make a complete ratchet set of runners and brackets so that the rear seat brace/support for the aft end of the "T" mast slides down the parallel runners, the mast is not made collapsible...…

the only problem that I had, and possibly of my own making was that I put all the fittings in one box and not in bags and one of the brackets on the aft end of the bulkhead which takes the seat/mast support had one of the lugs broken off when I came to fit it, and so fabricated another lug using similar thickness plasticard and glued in place with cyano acrylate.

but it goes together well, and easily too.


 

















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PostSubject: Re: like a kid in a sweet shop   Fri Sep 07, 2018 6:25 pm

today was fitting the main mast carrying the running and blue flashing light platforms and stays to the "T" mast .the bracket at the aft end of the "T" mast was glued in position and strengthened with 4 tiny frame makers pins.

I tried making it removeable for ease of transportation but sadly it would have been two fragile fitting, and also the wiring to the lights would not have been viable should it have remained removeable......and so, when I get hold of some more superglue it will be glued in position. I used different thicknesses of brass tubing and bar to construct the mast and the stays were made from stainless steel. 











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PostSubject: Re: like a kid in a sweet shop   Sat Sep 08, 2018 2:40 am

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PostSubject: Re: like a kid in a sweet shop   Sun Sep 09, 2018 9:40 pm

I decided today to snip all of the railing turnbuckle fittings from their moulded tracks......these fittings are made from cast brass and so quite strong...….stronger than I could make from plastic and brass and no matter how much thought and fabrication I could muster, there is absolutely no way I could get them anywhere near as those supplied in the fittings kit....

just one slight problem though...the diamond shaped fixing brackets on the ends of the turnbuckles at either end of the deck housing safety lines are cast wrongly and lie at 90* to what they should be.....

so out again came the snips and I cut them away from the bracket, with the intention of cleaning them and the "shackle" attached to the brass fitting and redrilling both the shackle and the diamond plate and then drilling for a new loop of brass wire to make the bracket lie correctly longitudinally with the wire lifeline....


and so I started filing one of them with a diamond tipped needle file...……

the bracket being so small at 12 x 7 mm I tried holding with my fingers and then some circlip pliers and soon...…...disaster, the 1st one pinged out of my grip onto my workshop floor and lost into oblivion for ever more...…….ohhh sheet, or words to that magnitude...……….what to do, as I now have only 7 instead of 8 diamond brackets...….


sod it...…...I reverted to my old stand in, and cut a number, enough to cover all the brass brackets and more besides...….and after they are all painted chromium, who will ever know, other than you lot, and the millions that read these threads, lol...…

onwards and upwards. 













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PostSubject: Pulpit rails   Tue Sep 11, 2018 7:57 am

Hi Neil,
Great work!
A question - how do you solder additional rails without the previously soldered ones coming apart?
Thanks
Cheers
Jeff
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 8:11 am

Thornej wrote:
Hi Neil,
Great work!
A question - how do you solder additional rails without the previously soldered ones coming apart?
Thanks
Cheers
Jeff
hi jeff,

I use silver soldering for almost all my work these days with a portable brazing hearth made from a product called Vermiculite able to take temperatures up to 1600C...…...and the heat from a Sievert propane pencil tipped torch...……..temperature is very localized to the point you are soldering and as soon as you remove that heat from the immediate location the solder sets, meaning that you can solder both sides of a bar without the other side being liquified...……..no good for brass of 1mm or less, as the heat melts it to a blob.

I gave up soft soldering years ago in favour of silver soldering...……..as it is a whole lot stronger and doesn't come apart if knocked...……….however I am about to buy some liquid soft solder paste so that I can use a low heat from a kitchen flambé torch to solder the thin life belt holders...……..but think i'll take templates of the parts before I do, in case I melt them lol.
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 8:21 am

Great, thanks  ThumbupThumbup
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 9:23 am

no problem. 2thumbsup
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 9:29 am

What diameter silver solder wire do you use Niel, and what flux is appropriate????????????
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 9:46 am

the diameter isn't really the governing factor Damien, although the stuff I use is around 1.25mm dia...…...silver solder comes in differing melt points unrelated to the diameter of the rod...……….and I was given a bundle of the same dia rod some years ago which will last me a lifetime, lol.....and I haven't a clue as to what temperature it melts at, sorry.
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 9:50 am

I've used brazing rod in the past mostly on my hillclimb car but 3mm or 1/8" is a tad big for model use.  lol! lol!
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 12:34 pm

Damien wrote:
I've used brazing rod in the past mostly on my hillclimb car but 3mm or 1/8" is a tad big for model use.  lol! lol!


That's exactly what I've been soldering up, Damien......3.2mm brazing rod.
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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 1:45 pm

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PostSubject: Re: like a kid in a sweet shop   Tue Sep 11, 2018 5:31 pm

nhp651 wrote:
Thornej wrote:
Hi Neil,
Great work!
A question - how do you solder additional rails without the previously soldered ones coming apart?
Thanks
Cheers
Jeff

Jeff

There is an alternative to using silver solder for which you need a big heat source. I use soft solder and to prevent melting one joint whllst soldering the next I use heat sinks on either side of the joint. These can be as simple as crocodile clips, or larger metal spring clips.

Barrie
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PostSubject: Re: like a kid in a sweet shop   Wed Sep 12, 2018 8:33 am

Thanks Barrie ThumbupThumbup
Cheers
Jeff
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PostSubject: Re: like a kid in a sweet shop   Fri Sep 14, 2018 11:08 pm

work has stopped just for the moment as I've run out of space, lol...…...I have had my centrifugal casting system up for sale as haven't used it in 3 years, but I now need to cast some parts in resin and white metal before it goes...…..so have dug it out, dusted it off and ordered some resin to cast the resin parts.....and then some white metal bits to finish off before it goes...…...so that all to come over the next few days...…...i'll post a few photos of the gear and castings in their moulds once I have started.,









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PostSubject: Re: like a kid in a sweet shop   Sun Oct 28, 2018 6:17 pm

I  have done nothing in weeks to the two Shannon's because of my broken leg an d feeling unsafe in the work shop on crutches, but last Saturday/Sunday at the Blackpool model show both I and Mick French , whom I am making the second Shannon for decided to have a word with Andy Grigg of Models by Design about his new buckets which can and do adapt to the German water jets, and give the proper impression rather than the square shaped one s and they fit perfectly and look well. 

the buckets themselves are made from GRP and brackets supplied......so I have been looking at them tonight and figuring how to fit them to the main bodies of the German jets......more will be revealed later.

However the parts supplied by MBD are a Nozzle plate which turns the square end of the jet outlet into a rounded outlet, and a moveable cone nozzle that fits over the new cap...…..finally the Bucket and a set of laser cut brackets which attach to the buckets and the main face plates attached to the stern transom.




















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PostSubject: Re: like a kid in a sweet shop   Mon Oct 29, 2018 12:38 am

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